Can I dissable built-in Panels with another python script?
Import and unregister the UI panel

Simple test script, toggles the rego of the 3DView Properties View Panel, by looking at its is_registered property.

import bpy
# import the view panel
from bl_ui.space_view3d import VIEW3D_PT_view3d_properties as VP
# toggle rego
if VP.is_registered:
    bpy.utils.unregister_class(VP)
else:
    bpy.utils.register_class(VP)


Would suggest this is done in your register / unregister methods.

IMO this is a slippery slope, if you are going to distribute your addon,  as other addons may append prepend to those panels.